How do volcanoes erupt? What is lava and what happens when it cools? Where are the world's biggest volcanoes? Just stay cool-and let Volcano Vulcan, Dragon Explorer, take you around the hotspots! National Geographic supports K-12 educators with ELA Common Core Resources. Visit www.natgeoed.org/commoncore for more information.
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Dr. Ellen Prager is a marine scientist and author, formerly the chief scientist at the world's only undersea research station in the Florida Keys. With her ability to make science fun and understandable for people of all ages, she has built a national reputation as a spokesperson on earth and ocean science issues. She has appeared on The Today Show, Good Mor
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